Spelunked rhymes with:
flunked, plunked, debunked, defunct, dunked, flunked, junked, plunked, adjunct, banked, bengt, blanked, blinked, cranked, debunked, defunct, distinct, dunked, extinct, flanked, flunked, franked, hoodwinked, indistinct, instinct, interlinked, junked, linked, outflanked, plunked, precinct, ranked, sacrosanct, spanked, succinct, tanked, thanked, winked, yanked